chore(devcontainer): added devcontainer (#43)

.devcontainer/.dockerignore

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+.dockerignore
+devcontainer.json
+docker-compose.yml
+Dockerfile
+README.md

.devcontainer/Dockerfile

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+FROM qmcgaw/rustdevcontainer:debian
+RUN rustup update nightly && rustup target add wasm32-unknown-unknown --toolchain nightly

.devcontainer/README.md

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+# Development container
+
+Development container that can be used with VSCode.
+
+It works on Linux, Windows and OSX.
+
+## Requirements
+
+- [VS code](https://code.visualstudio.com/download) installed
+- [VS code remote containers extension](https://marketplace.visualstudio.com/items?itemName=ms-vscode-remote.remote-containers) installed
+- [Docker](https://www.docker.com/products/docker-desktop) installed and running
+- [Docker Compose](https://docs.docker.com/compose/install/) installed
+
+## Setup
+
+1. Create the following files on your host if you don't have them:
+
+    ```sh
+    touch ~/.gitconfig ~/.zsh_history
+    ```
+
+    Note that the development container will create the empty directories `~/.docker`, `~/.ssh` and `~/.kube` if you don't have them.
+
+1. **For Docker on OSX or Windows without WSL**: ensure your home directory `~` is accessible by Docker.
+1. Open the command palette in Visual Studio Code (CTRL+SHIFT+P).
+1. Select `Remote-Containers: Open Folder in Container...` and choose the project directory.
+
+## Customization
+
+### Customize the image
+
+You can make changes to the [Dockerfile](Dockerfile) and then rebuild the image. For example, your Dockerfile could be:
+
+```Dockerfile
+FROM qmcgaw/rustdevcontainer
+RUN apk add curl
+```
+
+To rebuild the image, either:
+
+- With VSCode through the command palette, select `Remote-Containers: Rebuild and reopen in container`
+- With a terminal, go to this directory and `docker-compose build`
+
+### Customize VS code settings
+
+You can customize **settings** and **extensions** in the [devcontainer.json](devcontainer.json) definition file.
+
+### Entrypoint script
+
+You can bind mount a shell script to `/root/.welcome.sh` to replace the [current welcome script](shell/.welcome.sh).
+
+### Publish a port
+
+To access a port from your host to your development container, publish a port in [docker-compose.yml](docker-compose.yml). You can also now do it directly with VSCode without restarting the container.
+
+### Run other services
+
+1. Modify [docker-compose.yml](docker-compose.yml) to launch other services at the same time as this development container, such as a test database:
+
+    ```yml
+      database:
+        image: postgres
+        restart: always
+        environment:
+          POSTGRES_PASSWORD: password
+    ```
+
+1. In [devcontainer.json](devcontainer.json), change the line `"runServices": ["vscode"],` to `"runServices": ["vscode", "database"],`.
+1. In the VS code command palette, rebuild the container.

.devcontainer/devcontainer.json

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+{
+    "name": "project-dev",
+    "dockerComposeFile": ["docker-compose.yml"],
+    "service": "vscode",
+    "runServices": ["vscode"],
+    "shutdownAction": "stopCompose",
+    "postCreateCommand": "~/.windows.sh",
+    "workspaceFolder": "/workspace",
+    // "overrideCommand": "",
+    "extensions": [
+        "rust-lang.rust-analyzer",
+        "tamasfe.even-better-toml", // for Cargo.toml
+        "eamodio.gitlens", // IDE Git information
+        "davidanson.vscode-markdownlint",
+        "ms-azuretools.vscode-docker", // Docker integration and linting
+        "shardulm94.trailing-spaces", // Show trailing spaces
+        "Gruntfuggly.todo-tree", // Highlights TODO comments
+        "bierner.emojisense", // Emoji sense for markdown
+        "stkb.rewrap", // rewrap comments after n characters on one line
+        "vscode-icons-team.vscode-icons", // Better file extension icons
+        "github.vscode-pull-request-github", // Github interaction
+        "redhat.vscode-yaml", // Kubernetes, Drone syntax highlighting
+        "bajdzis.vscode-database", // Supports connections to mysql or postgres, over SSL, socked
+        "IBM.output-colorizer", // Colorize your output/test logs
+        // "mohsen1.prettify-json", // Prettify JSON data
+        // "zxh404.vscode-proto3", // Supports Proto syntax
+        // "jrebocho.vscode-random", // Generates random values
+        // "alefragnani.Bookmarks", // Manage bookmarks
+        // "quicktype.quicktype", // Paste JSON as code
+        // "spikespaz.vscode-smoothtype", // smooth cursor animation
+    ],
+    "settings": {
+        "files.eol": "\n",
+        "[rust]": {
+            "editor.defaultFormatter": "rust-lang.rust-analyzer",
+            "editor.formatOnSave": true
+        },
+        "remote.extensionKind": {
+            "ms-azuretools.vscode-docker": "workspace"
+        },
+        "editor.codeActionsOnSaveTimeout": 3000,
+        "rust-analyzer.serverPath": "/usr/local/bin/rust-analyzer"
+    }
+}

.devcontainer/docker-compose.yml

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+version: "3.7"
+
+services:
+  vscode:
+    build: .
+    volumes:
+      - ../:/workspace
+      # Docker
+      - ~/.docker:/root/.docker
+      # Docker socket to access Docker server
+      - /var/run/docker.sock:/var/run/docker.sock
+      # SSH directory for Linux, OSX and WSL
+      # On Linux and OSX, a symlink /mnt/ssh <-> ~/.ssh is
+      # created in the container. On Windows, files are copied
+      # from /mnt/ssh to ~/.ssh to fix permissions.
+      - ~/.ssh:/mnt/ssh
+      # Shell history persistence
+      - ~/.zsh_history:/root/.zsh_history
+      # Git config
+      - ~/.gitconfig:/root/.gitconfig
+      # Kubernetes
+      # - ~/.kube:/root/.kube
+    environment:
+      - TZ=
+    # Needed for debugging
+    # cap_add:
+    #   - SYS_PTRACE
+    # security_opt:
+    #   - seccomp:unconfined
+    entrypoint: zsh -c "while sleep 1000; do :; done"